Commit cb4a10cc authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds

[PATCH] Char: isicom, check card state in isr

Check if the card really interrupted us by reading its IO space and eventualy
return IRQ_NONE.
Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f0a0ba6d
......@@ -540,6 +540,11 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
return IRQ_NONE;
base = card->base;
/* did the card interrupt us? */
if (!(inw(base + 0x0e) & 0x02))
return IRQ_NONE;
spin_lock(&card->card_lock);
/*
......
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